#3F150B#3F150B

#3F150B is a dark, moderate red. Relative luminance 0.016; OKLCH L 26.0% C 0.069 H 34.7°. Best body text is #FFFFFF at 15.87:1 contrast (WCAG AA passes).

Color values

HEX	#3F150B
RGB	rgb(63, 21, 11)
HSL	hsl(12, 70%, 15%)
HSV	hsv(12, 83%, 25%)
CMYK	cmyk(0%, 66.7%, 82.5%, 75.3%)
CIE-LAB	lab(13.34, 19.80, 15.79)
CIE-LCH	lch(13.34, 25.33, 38.58°)
OKLab	oklab(26.04% 0.0564 0.039)
OKLCH	oklch(26.04% 0.069 34.7)
XYZ	xyz(2.3787, 1.6176, 0.5035)
Luminance	0.0162 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F150B #0B353F

analogous

#3F0B1B #3F150B #3F2F0B

triadic

#3F150B #0B3F15 #150B3F

tetradic

#3F150B #1B3F0B #0B353F #2F0B3F

square

#3F150B #1B3F0B #0B353F #2F0B3F

split-complementary

#3F150B #0B3F2F #0B1B3F

monochromatic

#1A0905 #1A0905 #3F150B #732614 #A7381D

Accessibility & contrast

On white

15.87

#3F150B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.32

#3F150B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F150B

15.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F150B	#FFFFFF	#000000	##FFFFFF
##3F150B	1.00	15.87	1.32	15.87
#FFFFFF	15.87	1.00	21.00	1.00
#000000	1.32	21.00	1.00	21.00
##FFFFFF	15.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#201C0A

Deuteranopia (green-blind)

#2B260A

Tritanopia (blue-blind)

#460C13

Achromatopsia (no color)

#222222

Design tokens & code

CSS

--color: #3f150b;
/* rgb */ color: rgb(63, 21, 11);
/* oklch */ color: oklch(26.0% 0.069 34.7);

Tailwind

colors: {
  custom: {
    50: '#78544b',
    500: '#3f150b',
    950: '#000000',
  },
}

SCSS

$custom: #3f150b;
$custom-light: #78544b;
$custom-dark: #000000;

JSON

{
  "hex": "#3f150b",
  "rgb": {
    "r": 63,
    "g": 21,
    "b": 11
  },
  "hsl": {
    "h": 11.538,
    "s": 70.27,
    "l": 14.51
  },
  "oklch": {
    "l": 0.26041,
    "c": 0.06855,
    "h": 34.7
  },
  "luminance": 0.01617
}

Semantic roles & 50–950 ramp

primary

#3F150B

secondary

#2A6C7C

accent

#CBED3B

background

#F7F4F4

surface

#EEE7E7

border

#C9C3C3

text

#090301

muted

#7B7877

Preview Lab

Preview with #3F150B

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →